I'd be particularly interested to hear your observations as to the people of the Baltic coast, given your claims about the people of that area and the fact that all three I mention are from along the Baltic coast (assuming, in one case, that Malbork is counted as Baltic coast).
The map I linked to doesn't claim that every Pole on the Baltic coast is blond. Do you understand percentages Harry?
Can you perhaps go into detail about what you have seen with regard to people in Poland and the number of people with blonde hair and blue eyes?
In my own family most people, myself included, have blond hair and blue eyes, but there are also dark-eyed brunettes in my family. If you are assuming my posting that map means that I somehow believe that only blonds are Polish then you are sorely mistaken.